DTC Detection Logic

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

P0087

00

LOW FUEL PRES

(Fuel rail/system pressure - too low)

A

Diagnosis condition

Engine running at idle

Signal (terminal)

Fuel rail pressure signal

Threshold

• Fuel rail pressure does not reach 4.0 MPa (40.8 kg/cm ² , 580 psi) at engine cold start [water temperature -12 deg.C (10.4 deg.F) - 40 deg.C (104 deg.F)].
• Fuel rail pressure remains at 7.5 MPa (76.5 kg/cm ² , 1087.5 psi) or less for 1 second or more during engine idle condition after cold start [water temperature -12 deg.C (10.4 deg.F) - 40 deg.C (104 deg.F)].
• The following condition continues for 5 seconds or more after engine start (regardless of water temperature): Target fuel pressure - Actual fuel pressure = 2.7 MPa (27.5 kg/cm ² , 392 psi) or less.

Diagnosis delay time

5 seconds or more